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From "Billie Rinaldi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ACCUMULO-3890) Use of CredentialProvider results in a lot of NN ops
Date Thu, 11 Jun 2015 20:46:01 GMT

     [ https://issues.apache.org/jira/browse/ACCUMULO-3890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Billie Rinaldi updated ACCUMULO-3890:
-------------------------------------
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Thanks for the reviews, everyone!

> Use of CredentialProvider results in a lot of NN ops
> ----------------------------------------------------
>
>                 Key: ACCUMULO-3890
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3890
>             Project: Accumulo
>          Issue Type: Bug
>    Affects Versions: 1.6.1, 1.6.2, 1.7.0
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>             Fix For: 1.7.1, 1.8.0, 1.6.3
>
>         Attachments: ACCUMULO-3890.1.patch, ACCUMULO-3890.2.patch, ACCUMULO-3890.3.patch,
ACCUMULO-3890.4.patch, ACCUMULO-3890.5.part2.patch, ACCUMULO-3890.5.patch, ACCUMULO-3890.6.patch,
ACCUMULO-3890.7.patch
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> Every time we access a sensitive property or iterate over a configuration when there
is a CredentialProvider configured, it results in NN operations (as evidenced by FSNamesystem.audit
logs).  I think that we could assume the CredentialProvider is static, read its properties
once and cache them in memory to avoid these unnecessary reads.



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